09-24-2009 07:55 AM
Hi,
we have a problem with a 6534 Highspeed DIO card. We make three measuremens a second with a 6534 card continuously over several hours. The application works fine on several computers, but on one computer the measurements freezes the system when it is started.
Does any know why the 6534 freezes the computer?
We use CVI, NIDAQ 7.x and we have about 50 system running perfectly.
Can it be that the 6534 freezes the system because the datas are not synchron? Can it be a DMA problem? How can we solve it?
Thanks Oliver
09-24-2009 07:59 AM
One additional information:
Weeks ago we had the same problem in the lab with an other computer. When debugging the program the system freezed right after calling the Dig_In command.
Can it be the measured datas???
Can the card make problems when the synchronization is not 100%?
Oliver
09-24-2009 05:58 PM - edited 09-24-2009 06:00 PM
Hey Oliver,
It seems you have started the troubleshooting process, but here are a few questions that will help you to the next level of troubleshooting to hopefully help you narrow things down to the root cause of your issue.
- Have you tried to place the PCI-6534 into a computer that you know works, and does the issue follow the PCI-6534?
- In the same way, have you placed a good working PCI-6534 into the computer that is freezing on you?
- Have you tried running an example program that ships with the driver, and does that give the same behavior as your code?
- What are the differences between the computers that work and the ones that freeze up (such as other boards in the computer, newer motherboards, the board in a different PCI slot, etc.)?
- Are you getting any errors from the code? If no, do you have proper error handling in your code that would tell you if you were getting an error from the device?
Try to narrow down the problem to a specific board or PC, kind of like you did with the specific function call, so that you can determine if the issue is with the specific 6534 boards you are using, or if it is something else. If you determine that the issue is with the 6534, then call into NI's support and talk with an Applications Engineer to set up an RMA to return your device. Hope this helps. Let us know how things go. Thanks, and have a great day.
Regards,
DJ L.